The convection currents are formed due to heating of molecules.
When the liquid molecules are heated, the liquid becomes larger in size and lighter in weight. The heated molecules take up more space and rise to the top, while the cooler molecules comes to the bottom and takes the place. This cycle is known as the convection current.
Convection currents are the result of differential heating. Lighter which is less dense and warm material goes upward while on the other hand, heavier which is more dense and cool material sinks. This movement creates circulation patterns known as convection currents in the atmosphere.
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Is that a fact or question?
<span>An area of wave-washed sediment along a coast is called a <u>beach.
</u>Beaches are found near water, on the coast, and there are a lot of sediments there as a result of water which washes the beach constantly. <u>
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It is very important for a geographer to define regions so that they can differentiate between the physical features (Mountain Ranges ,River etc) of the various geographic region in question
Explanation:
- The Geographers avoid using subjective information which is based of people reviews about the region,personal opinions,unclear data.
- Geographers also avoid using previously stated facts as they are subjected to change over a period of time
The question is asking for the continent with the least precipitation, that is rainfall. Places that receive little precipitation are known as deserts and the biggest Desert in the world is actually in Antarctica- so the correct answer is Antarctica (although it's covered in ice!)<span />